Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "More support of snaps for VNF"
  - More support of snaps for VNF

    Remove OpenStack utils in vnf_base
    Support snaps for quotas management in cloudify_ims

    Change-Id: I44e5b01bb26569276133e85dfc25bc2cceb03056
    Signed-off-by: boucherv <valentin.boucher@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 506ef8b..ac2de43 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 506ef8bdcb772637be4dc01c5afc0e583f7ae3d3
+Subproject commit ac2de4356604f81cff9c303f0af36601e8a330ea